The store had to a number of clerks because sales were down.
These surveys indicate that many crimes go _____ by the police, mainly because not allvictims report them.
The wealth of a country should be measured _____ the wealth and happiness of its people as well as the material goods it can produce.
As the saying goes, one is never too old to learn. After he _____, he will devote himself to gardening.
----You just think of yourself! You kept me waiting for at least three hours.----I am sorry that you _____ think so.
Some say one thing, but _____.